飞行中附面层转捩的流动显示与测量技术

阐述了在飞行试验中测量附面层转捩的重要性；介绍了四种在飞行试验中显示和测量机翼附面层转捩的方法；给出了Ｆ－１４Ａ飞机用热膜，附面层耙，液晶和表面总压管等方法测量附面层转捩的结果，并对以上四种测量结果者了对比分析，指出了各自的优缺点，说明热膜法能精确地确定飞行状态下机翼附面层转捩位置；附面层也能比较精确地进行测量，且能提供与表面摩擦仍关的参数，液晶法能人出附面层转捩的整体图形，表面总压管不能确切地指

Flow Visualization and Measurement Technique of Boundary Layer Transition Used in Flight Test

The importance of measuring boundary layer transition used in flight test has been expounded.And four kind of measurement methods which can determine the boundary layer transition location in flight test for boundary layer transition hsve been recommended. the results of boundary layer transition measurement using hot film anenometer system,boundary layer rakes , liquid crystals and surface pitot tubes at F 14A aircraft have been given and analyzed. It is indicated that the hot film anenometer can provide the most accurate indication of transition location,the boundary layer rake served as a good seconder indicator of the transition location but can also provide skin frcation related parameters,the liquid crystals method can provide a global view of the transition location,the surface pitot tubes method does not consistently indicate transition location. These results can provide references for flight measurement.